monitoring fluvial bull trout migration and movements in the lemhi river subbasin, idaho:...
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Monitoring fluvial bull trout migration and movements in the Lemhi River Subbasin, Idaho:
integrating PIT tag technology with radio telemetry
Kevin Poolea and Jeff DiLucciaIdaho Department of Fish and Game
aPacific States Marine Fisheries CommissionSalmon, Idaho
2015 PIT Tag Workshop
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STUDY AREA
Lemhi River Subbasin• 3,289 km2
• 2,140 stream km• 251 cfs (mean annual flow)• High elevation topography
3,900 – 12,195 ft
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Source: Idaho Dept. of Water Resources, 2014
700 gravity diversions
• Heavily diverted by irrigation• 2 out of 31 tributaries connected
Hayden Creek Big Springs Creek
• USFWS identified critical habitat
LEMHI SUBBASIN WATER DEVELOPMENT
Connected
Lemhi Subbasin Tributary Status: 2008
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Tributary Reconnection
Restoring Perennial Stream Flows
Habitat Restoration
LEMHI CONSERVATION PROGRAM (LCP)
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Screening (ongoing)
Canyon Creek Functional Reconnection
Little Springs Creek Complete Restoration
Kenney Creek Functional Reconnection
Big Timber Creek Bohannon Creek Hawley Creek
Diversions/Screens
Additional Flow
Flow Barriers/Screens
IMPLEMENTATION PROGRESS
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HABITAT ACTION EFFECTIVENESS MONITORING
IMW: Intensively Monitored Watershed
ISEMP: Integrated Status & Effectiveness
Monitoring Program
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PREVIOUS KNOWLEDGE
Presence of fluvial sized Bull Trout:• Lemhi mainstem• Hayden Creek• Big Timber Creek• Kenney Creek
?
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2003-2005: Upper Salmon River migration study (Schoby and Curet 2007)
• 15 radio tagged
2006: Lemhi Subbasin migration study (Lamperth et al. 2006)
• 32 radio tagged
RADIO TELEMETRY
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Migration ResultsRADIO TELEMETRY
Upper Salmon River Study
• Mean Length (mm): 466 ± 82 (330-680)
Lemhi River Subbasin Study: 2006
Lemhi River Subbasin Study
• Mean Length (mm): 493 ± 89 (352-696)
Hayden Creek Prespawn Migration Upper Salmon River Study: 2005
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RADIO TELEMETRY
Bull Trout Movements
Upper Salmon River Study• None detected entering or leaving Lemhi Subbasin• Winter habitat: mainstem Lemhi
Lemhi River Subbasin Study• Detected entering or leaving Lemhi Subbasin
• Winter habitat: mainstem Lemhi and Salmon River
Movement Results
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• 13 of 31 tributaries monitored• Three Upper Salmon River arrays
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PIT TAG TECHNOLOGY
• 2007: PIT tagging initiated• 2008 – Present: PIT tag arrays• Support habitat actions
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PIT TAG TECHNOLOGY
3247 tagged Bull TroutMean Length (mm): 196 ± 92 (56-740)
Tagging Results
(n=2899)
(n=343)
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PIT TAG TECHNOLOGY
90%
Tagging Results
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PIT TAG TECHNOLOGY
1018 (31%) Bull Trout detected
Detection Results
(n=608)
(n=409)
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PIT TAG TECHNOLOGY
Mean Length (mm): 435 ± 80 (300-700)
Hayden Creek Prespawn Migration
Migration Results
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Tributaries/Reaches
Hayden Creek
Mainstem Lemhi
Kenney Creek
Pattee Creek
PIT TAG TECHNOLOGYMovement Results
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Hayden Creek
PIT TAG TECHNOLOGY
• 704 (38%) detected leaving Hayden
• 64 detected leaving Lemhi subbasin Overwintered in upper Salmon River
• 17 detected in tributaries Kenney Creek Little Springs Creek Wimpy Creek
Movement Results
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PIT TAG TECHNOLOGY
• 55 (41%) detected leaving mainstem
• 30 detected leaving Lemhi subbasin Overwintered in upper Salmon River
• 42 detected in Hayden Creek
• Four detected in other tributaries Kenney Creek Big Timber Creek
Movement ResultsMainstem Lemhi
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Kenney Creek
PIT TAG TECHNOLOGY
• 14 (5%) detected leaving Kenney
• One detected leaving Lemhi Subbasin
• One detected In Hayden Creek
Movement Results
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Pattee Creek• One (5%) detected elsewhere
No PIT tag array
• Detected in Hayden Creek
PIT TAG TECHNOLOGYMovement Results
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DISCUSSION
RADIO TELEMETRY PIT TAG TECHNOLOGY
Expanding Our Knowledge
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• Integrating technologies is beneficial
• Fluvial Bull Trout utilizing greater extent
• Interchange of Bull Trout populations
• Supports and directs future adaptive management: Lemhi River Subbasin Bull Trout
DISCUSSIONManagement Implications
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Through the years, all of the:• IDFG Fisheries Biologists, Technicians, and Bioaides• PSMFC Fisheries Biologists and Technicians
ACKNOWLEDGEMENTS
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Any Questions?
It’s hard to work with this view!
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Lampert, J., C. Claire, and J. Lutch. 2007. Fluvial bull trout Salvelinus confluentus migratory dynamics and life history in the Lemhi River subbasin, Idaho. Idaho Department of Fish and Game,
Report 07-11, Boise.
Murphy, P. and M. Horsmon. 2003. Kenney Creek fisheries report. Idaho Department of Fish and Game Anadromous Screen Program, Salmon.
Murphy, P. and M. Horsmon. 2004. Big Timber Creek fisheries report. Idaho Department of Fish and Game Anadromous Screen Program, Salmon.
Schoby, G.P. and T. Curet. 2007. Seasonal migrations of bull trout, westslope cutthroat trout, and rainbow trout in the upper Salmon River basin, Idaho. Idaho Department of Fish and Game, Report 07-12, Boise.
(USFWS) U.S. Fish and Wildlife Service. 2002. Chapter 17, Salmon River Recovery Unit, Idaho. 194 pages in U.S. Fish and Wildlife Service. Bull trout Salvelinus confluentus draft recovery plan. Portland, Oregon.
LITERATURE CITED